Improvement in stills



tatrt llnitml anni elimine.

Letters Patent No. 94,584, dated Sq'itrmlmr 7, 1.869.

The c'nedule referred. to in` these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, OHAnLEsK. DU'r'roN, of New In order to enable others skilled in the art to which lny invention app'ertains, to make and use the same, 1 will now proceed to describe its constructirm and operation, referring to the annexed drawings, whichibrin a part of this specification, and in which- Figure 1 is a longitudinal vertical section, and

Figure 2 is aperspective ofthe interior arlangcuient ofthe still.

A represents the outer case or covering, and is the same as the ordinary copper or iron still. 'This casing is rendered air-tight, so as to secure the substance evaporated, which 'passes ont of the cap through the pipe B, and is condensed in a worin in any nof the known and usual ways.

On the bottom of the casing A is placed a hollow drum, C, said drum resting on legs or supports, as

shown in. fig. l, so as 'to be raised a suitable distance above saidbottom.

Near the outer edge of the drum C is placed a series of perpendicular tubes, e a, which lead from saiddrum to a drum, D, this latter drum being placed any convenient distance from theiin'nler, and supported by the pipes e a.

I also provide the drum C, further inward toward the centre, with another series of pipes, b.b, which lead to another drum, E, these pipes being also perpendicular, and from the drinns 1) and E pipesc c lead to an exhaust-pipe, d, which carries the steam or hotair out from the still.

The steam or hot air is admit-ted into the drum C through the pipe c.

The steam enters the lower drum G through the pipe c, passing through the outer casing A, and is equally distributed, through the tubes a. a and l1 b, to the upper drums D and E, and passes out of these in the pipe d, passing through thc outer casing.

The substance to be distill d or evaporated is placed in the still and entirely covers or surrounds the drums i and tubes.

Said drums and tubes may he constructed of iron, brass, copper, or any other metal, the drums and tubes to he of any length or size desired.

The advantages of this arrangement over any other now in use are mainly as follows:

he heat is applied internally, and. as fresh steam or hot airis constantly admitted into the lower drum, and as the tubes are perpendicular and equal. in length, thc steam has but a short distance to pass to reach the exhaust, thus passing out before it `becomes-condensed. Also, as any number jot' tubes may be used, a greater amount of hea-ting-snriace is presented than by any outward application of heat.

As supcrheated steam or hot air may be used, any required degree of heat can be obtained. Valves are to bc attached to the exhaust, so that any desired pressure can be obtained. As thc tubes are short and perpcmlicular, and as heat naturally rises upward, a greater amount of heat is obtained than could possibly be obtained. in vcoils of pipe or tubes placed in a horizontal position.

Another advantage is, that by having a super-heater and thermometer attached, the heat can be easily controlled, which is a very essential point in distillation, as turpentinc and oil are seriously aii'ected by too much heat.

Having thus fully described my invention,

What I claim as new, and desire to secure by 4'Letters Patent, is?- 4 1. Passing steam, or its equivalent, through one or more series of perpendicular pipes inside of a still, substantially as and for the pnrposes'hereiu set forth.

2. Providing a still with hollow drums connected b v perpendicular pipes, for the purpose of applying the heat internally, substantially as herein set forth.

3. The combination of the hollow drum C, perpendicular pipes a a and b b, and drums D and E, all substantially as and for the purposes herein set forth.

4. In combination with thc outer easing A, the drums C l) E, perpendicular 'pipes a a and b b, inlet-pipe c, and exhaust-pipe d, all constructed and arranged to operate substantially as and for the purposes herein set forth.

In testimony that I claim 'the foregoing, I have hereunto set my hand, this lst day of March, 1869.

VCHARLES K. BUTTON.

Witnesses:

EDM. F. BnowN,

lmoronn EvEn'r. y 

